6.5.1

Table Of Contents
Configuring System Logging
The ESXi hosts run the syslog service (vmsyslogd), which writes messages from the VMkernel and other
system components to log files.
You can configure the amount and location of the log. You can also create and apply log filters to modify
the logging policy of an ESXi host.
Configure Syslog on ESXi Hosts
You can use the vSphere Web Client or the esxcli system syslog vCLI command to configure the
syslog service.
For information about using the esxcli system syslog command and other vCLI commands, see
Getting Started with vSphere Command-Line Interfaces.
Procedure
1 In the vSphere Web Client inventory, select the host.
2 Click Configure.
3 Under System, click Advanced System Settings.
4 Filter for syslog.
5 To set up logging globally, select the setting to change and click Edit.
Option Description
Syslog.global.defaultRotate Maximum number of archives to keep. You can set this number globally and for
individual subloggers.
Syslog.global.defaultSize Default size of the log, in KB, before the system rotates logs. You can set this
number globally and for individual subloggers.
Syslog.global.LogDir Directory where logs are stored. The directory can be located on mounted NFS or
VMFS volumes. Only the /scratch directory on the local file system is persistent
across reboots. Specify the directory as [datastorename] path_to_file, where the
path is relative to the root of the volume backing the datastore. For example, the
path [storage1] /systemlogs maps to the
path /vmfs/volumes/storage1/systemlogs.
Syslog.global.logDirUnique Selecting this option creates a subdirectory with the name of the ESXi host under
the directory specified by Syslog.global.LogDir. A unique directory is useful if
the same NFS directory is used by multiple ESXi hosts.
Syslog.global.LogHost Remote host to which syslog messages are forwarded and port on which the
remote host receives syslog messages. You can include the protocol and the port,
for example, ssl://hostName1:1514. UDP (default), TCP, and SSL are
supported. The remote host must have syslog installed and correctly configured
to receive the forwarded syslog messages. See the documentation for the syslog
service installed on the remote host for information on configuration.
vSphere Installation and Setup
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